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Noddy65
31-10-06, 02:05 PM
Hi there has anyone tried one of the in tank CO2 indicators that are available now?

They range from lovely little glass units (ADA) to plastic type ones.

The SERA brand sells for around $20...was going to give it a try and see how it goes...

Mike

SkullJug
31-10-06, 02:37 PM
Don't bother with the sera one - I've used it with 1 2l diy generator - I worked out I had about 10ppm and the sera indicator read this as High.

It only three readings low - Good - High.

I am pretty sure these just work on PH and don't take KH into account.

Use a kh tester and a ph tester - Much more useful and accurate!

shake
31-10-06, 03:00 PM
I had a Dupla Co2 indicator when I first got into planted tanks 10 years ago. Not using one on this tank though.

They are only really useful as a guide. As SJ said I don't think they take KH into account.

Noddy65
31-10-06, 03:26 PM
Thats true but I was going to try and alter the indicator as seen in this post...
http://www.aquaticplantcentral.com/forumapc/do-it-yourself/32100-diy-drop-checker.html

This sets the KH of the indicator fluid to 4 so the ph reading should be more accurate..

Mike

shake
31-10-06, 04:01 PM
Thats true but I was going to try and alter the indicator as seen in this post...
http://www.aquaticplantcentral.com/forumapc/do-it-yourself/32100-diy-drop-checker.html

This sets the KH of the indicator fluid to 4 so the ph reading should be more accurate..

Mike

Just read the thread. Quite interesting. Now you got me thinking of buying one.

Dam you Mike. :):)

mintygreen
06-11-06, 01:00 PM
I have one, looks great, seems to be pretty durable too.

I've been following that thread, very interesting. I believe they have increased hardness of the "base water" from 4kH to 5kH.